I live in an area where there are lots of mature trees and for most of the year my front lawn is in shade. I think because of this my grass has a hard time growing well and as a result I have patches throught out my yard. I was thinking of initially going with a service like Trugreen or Chemlawn but after researching these guys online I'm having second thoughts. So it looks as if I'll have to do it myself, anyone have a few suggestions on what should be done to restore a lawn to its fullest potential?